PROTOSS
-Protoss probes needn't wait around to build a structure, they can simply open the Warp Rift and move on. This allows you to use all but one of your probes for harvesting resources.
-Put an observer over each unowned mineral field...
-Put important tech-tree structures together in a very protected area
-Be ready for the firebat rush. A combination of zealots, dragoons and photon cannons are your best defense early on.
-Zealots are your best unit against Goliaths...
-Use a Carrier-Scout combination against Battlecruisers
-Build plenty of Dragoons and Scouts to defend against Mutalisks
-You can use shuttles to drop high templars behind the enemy mineral lines and use storm on their workers. It's underhanded but it works.
-During a frontal attack, it's good to flank both sides of your opponent's army with packs of 3 to 5 scouts.
_____
-The Dark Archon is arguably the game's most influential unit.
-Probes are weak, so it's wiser to rely on cannons around your base for defense.
-Keep at least one scout in your base to be on the safe side (dear lord)
-Interceptors are so fast they rarely take a hit.
-Scourge can bring an end to a carrier in about 10 seconds (...)
-Photon Cannons can provide enough of a deterrent to halt attacks from human opponents permanently.
-Always keep at least three closely placed Photon Cannons at your base entrance.
TERRAN
-Because Terran structures are mobile, you can use a "moving city tactic"
-Firebats always are cost-effective against Zerg ground minions
-Against zerg, use battlecruisers defensively - keep wraiths and battlecruisers in your base specifically to kill guardians
-*NEVER* leave a CC for zerg to infest
-Build Ghosts for defense, they're too expensive for offense
-Keep Missile Turrets around your entire base as an early warning system.
-Upgraded Goliaths are good against scouts.
_____
-Marines can be used as alternative "missile turrets".
-A grid of bunkers is virtually impenetrable.
-Firebat groups are also excellent for destroying enemy buildings and structures
-The Goliath is the cream of your infantry
-The SCV looks like it might be a good fighting unit[...] Having the SCV harvest gas and minerals is a far more efficient use of the resources it took to build the unit.
-Keep an SCV hanging around just behind the front lines so it can scoot in and repair damaged Goliaths or Siege Tanks.
-You should build your missile turrets in groups of at least three. Keeping an SCV around to repair a damaged turret can save rebuilding costs.
-The [Valkyrie] is the equivalent to the Devourer.
-The Science Vessel carries a very high Vespene cost, and so usually you won't build it in quantity. (I can see that that made sense at the time).
-Using irradiate on lone units usually is an inefficient use of Science Vessel energy.
-Anytime you use a dropship, you must back it up with other units
ZERG
-Keep a large perimeter of sunken and spore colonies around your important structures
-When attacking an enemy base with strictly zerglings, don't waste your time attacking units, attack structures
-To take out a Terran, upgrade zerglings and send them at the enemy in groups of 12.
-A zerg player without Hydralisks is a Zerg player who's probably losing (LOLOLO)
-In ZvP, build Hydralisks because they're good against Zealots, Dragoons and Scouts.
_____
-The zergling has its limitations, of course. It's particularly vulnerable to attacks from Siege Tanks, Firebats, Carriers, and even Radiation.
-(Paraphrasing) Hydralisk is: core of zerg army, "bigger, stronger marine", "mobile spore colony".
-Ultralisks are good for "mopping up" leftovers after the main battle is fight. Ultralisks wait in the back and "wait for calm".
-He seems to think that Dark Swarm protects solely from air units.
-Guardians work best in groups of 10 or more. A single volley form such a group can destroy any enemy unit that has 200 of fewer hit points.
-Scourge are zerglings of the air.
General
-Always keep a defense force when you attack
-Once you commit to an attack, don't back down. If it looks like you aren't making progress, don't give up.
-Attack with at least two types of units - one that hits ground and one that hits air, this way your force won't be wiped out by one or two defenders it can't even touch.
Thought it was kind of funny =P
Cheers!